See also: Appendix:Variations of "til" English Phrase TIL (Internet slang, Reddit slang) Initialism of today I learned... TIL that scientists call the universe's average color "cosmic latte". Kids played with yo-yos in Ancient Greece? TIL. See also today years old you learn something new every day Anagrams &lit, Lit, TLI, lit, lit. Wikiwand - on Seamless Wikipedia browsing. On steroids.